Instead of appearing at the Grammy Awards, Chris Brown - seen at left with Rihanna at a pre-Grammy party - was arrested for a felony battery.

He surrendered to the LAPD and then posted $50,000 bail. An "unidentified woman" who appeared to have been beaten identified Brown as her attacker. Rihanna did not show up at the Grammys either. [EW, Rolling Stone, People,TMZ]

This report says Rihanna had "multiple bruises" and was in the hospital but has been released. [NY Daily News]

Cops say that Chris Brown and "the woman" they are not identifying were arguing inside a vehicle after midnight on Saturday; they received a 911 call and when they arrived, they noticed that the woman had "visible injuries." Brown had left the scene by the time police arrived. [TMZ]

The case is a felony and not a misdemeanor because of the visible injuries. [People]

The argument took place in a rented Lamborghini after a pre-Grammy gala at the Beverly Hilton. [Fox 411]

Rapper David Banner says: "One situation doesn't define a man and I really want American to stop doing that to people. As humans, none of us is perfect." Um, yeah, but. You don't hit women. [Rolling Stone]

Apparently in 2007, Chris Brown told Giant magazine: "[My stepfather] used to hit my mom. He made me terrified all the time, terrified like I had to pee on myself. I remember one night he made her nose bleed. I was crying and thinking, 'I'm just gonna go crazy on him one day…' I hate him to this day." A family history of domestic violence? [Perez]

This blogger adds, "Why is all this foolishness taking place during Black History Month?" [All Hip-Hop]

Meanwhile: Rihanna is looking for a bone marrow donor for a 5-year-old girl. [UPI]

Uh-oh: Peaches Geldof and husband of six months, Max Drummey, have separated! To her credit, Peaches did say she didn't expect it to last forever. But maybe at least a year? [Daily Mail]

Amy Winehouse is heading back to the UK after a long vacation in the Caribbean. She plans to present her lawyers with a "secret ex-file," detailing Blake Incarcerated's bad behavior. Ugly divorce countdown starts now! [News Of The World]

Is there tension in the Beckham marriage as Victoria heads to New York fashion week alone? She reportedly wants to stay in the U.S.: "She feels out of place in Milan and gets frustrated by not being able to understand what they are saying." [Daily Mail]

Whitney Houston sang at Clive Davis's pre-Grammy bash and sounded "incredible," E!'s Marc Malkin says. "Was she back to the days when she was in top high-note-hitting form? No, but close." [Yahoo News via E!]

Usher had to cancel his performance at a pre-Grammy party due to a "serious injury in the family" — apparently his wife Tameka experienced complications from plastic surgery in Brazil. Yikes! [TMZ, People]

A neurosurgeon from LA's Cedars-Sinai Medical Center is headed to South America to check on Usher's wife. [Access Hollywood]

Jennifer Aniston's 40th birthday party took place Saturday night at her house in Beverly Hills. Aniston and John Mayer "danced and huddled close all night," and guests included Oprah Winfrey, Sheryl Crow, David Arquette and wife Courteney Cox Arquette, Tobey Maguire and wife Jen Meyer, Laura Dern, Kevin Nealon, and Tom Hanks and Rita Wilson. Aniston has some kind of pull in Hollywood: the police kicked all the paparazzi out of the neighborhood! [Yahoo News via E!]

Lindsay Lohan was seen hanging out at a table behind Sam Ronson's DJ booth; while Sam worked, LL was drinking from bottles stashed under the table. LL would flirt with guys but bitch out any woman who came close. This report notes that LL looked "grossly skinny." [E!]

Director McG says of Christian Bale's "blowup": "The film set is a passionate place, and it happens… It was just one of those moments. I think I can speak on all of our behalf that we've all gotten a little fired up. And if anybody would take that moment and take it out of context, it would seem very, very strange." [People]

Beyoncé runs around two and-a-half miles every day and is "eating veg and drinking water" because her stylists — and her mom tell her when she's gained weight. As for the diet: "It's boring." [Mirror]

Here's video of the Jessica Simpson performance in which "every song was a disaster" and she mumbled through the lyrics and talked through tears, if you really want to watch that kind of thing. [ONTD via TMZ]

Since she is producing a teen TV show for Fox and has a movie in the works, Jennifer Lopez is "putting music on the back burner," which may be for the best. [MSNBC Scoop]

Do we really believe that Leonardo DiCaprio wants girlfriend Bar Refaeli to be on the cover of Sports Illustrated's Swimsuit Issue because it will "piss off" Gisele Bundchen? [Page Six]

Prince Harry and Paris Hilton were supposed to have a date? And the Prince canceled at the last minute? Did he come to his senses? Should we feel sorry for Paris? [Daily Mail]

Eddie Murphy has been ordered to pay £35,000 a month until his daughter — whose mother is Mel B. — turns 18. That's a total of about £7million. Another Shrek sequel? Anyone? [Daily Mail]

Dave Grohl wore a white knot on the red carpet at the Grammys to show his support for gay marriage and marriage equality. Think we'll see 'em at the Oscars? [E!]

A man was killed on Justin Timberlake's golf course in Tennessee Saturday in a freak accident involving a tree. [TMZ]

Minutes into his act at a UK nightclub, rapper Coolio was pelted by plastic bottles and ice cubes. Coolio jumped into the crowd to fight some dudes but was dragged way by security. Not exactly a gangster's paradise… [The Sun]

Welcome Charlie Axel into the world; he's the first son for Tiger Woods and wife Elin. [AP]

A reporter calls The International, Tom Tykwer's film starring Clive Owen and Naomi Watts, a "strange and beautifully made thriller." Tykwer is best known for his 1998 flick, Run Lola Run. [Salon]

Robbie Williams has been visiting weird websites, stuff like government paranoia and UFOs. [Daily Mail]

Original Buffy The Vampire Slayer Kristy Swanson and ice skating champ Lloyd Eisler got married on Saturday. This story notes that Swanson "lost 45 lbs. in time for her wedding with the help of The Medifast Diet and regular exercise, including martial arts, skipping rope and treadmill work." [People]

A tell-all book about Sean "Diddy Combs" by a former aspiring rapper is called Dancing With the Devil: How Puff Burned the Bad Boys of Hip-Hop. It's self-published, naturally. [Page Six]

"I want to keep learning, I have no ego. I'm blessed to be on one of the great shows. I made a statement last year that I was going to aggressively pursue my acting career… I want to do some television." - Sean "Diddy Combs on his CSI: Miami gig. [The Star]

Paradise Beach had improbable plot-lines. We were always in bikinis, even at funerals. And someone who was my brother ended up being my father and I pulled him – it was just insane." — Isla Fisher on her soap opera past, to GQ. [Daily Express]

"I've decided I am going to start loving my backside because I don't know anyone who does that. And for my daughter, I want to be able to say to her, 'I love this.' [Young women] look at all of us, myself included, on these magazine covers and they think, 'My God, how does she get skin like that?' And I can tell you, I have so many blemishes under this make-up that have been so fabulously covered, I promise you. I did realise a few years ago that no one actually talks about this retouching thing. It's like a secret or something. I'm damned if it's going to be a secret any more. I really want these young women to know we don't look like this." — Kate Winslet. [Daily Mail]

"I think I definitely want to go to college… I could always study drama. I think that would be really cool. There's always more you can learn. If I wanted to do something totally different, I love history." — Dakota Fanning. [Newsweek]

"Sir Anthony Hopkins is in the recording studio with Amy Winehouse, and we are hoping that next week Sir Brad and all the Pitt family will be performing The Sound of Music at the Brit awards." — Mick Jagger, making jokes at the Baftas. [People]

"It's so invasive. It's not like they're standing 100 feet away. They're in your face, not letting you walk, standing in the way when you're driving. It becomes a situation and it doesn't need to be." — Jessica Alba on the paparazzi. [The Star]

"I got into a bit of hot water for what I said about Amy Winehouse and I still say it again. I'm an ex-drug addict and I don't take that kind of stuff lightly. It stayed in my body for 25 years and it could still happen to this young woman or other addicts who are fooling around with drugs, especially needles. I would hope that what happened to me does not happen to her." — Natalie Cole, who has Hepatitis C and is waiting for a kidney transplant, on Amy Winehouse. [Mirror]

"Every time I go for an ultra scan the baby is like in crazy positions with legs star-shaped and stuff. It's not like in a baby position at all. I feel like he is used to base lines and beats and receptive to that, which is cute." — M.I.A. [Mirror]

"I grew up in Nashville, Tennessee, and my parents taught me to respect my elders. We'd say things like 'yes, ma'am' and 'no, sir' to adults. But kids in Los Angeles don't do that. I've drawn the line at my children calling adults by their first names. I tell them they can call people 'Miss Shannon' or 'Miss Heather' but that using only the first name is too familiar. Maybe I'm just old-fashioned." — Reese Witherspoon. [Reader's Digest]

"It's crazy for people to care about him having a bong hit. Nothing's the matter with it - I want to have a bong hit right now. Really, the message Phelps is giving is that you can smoke weed and still be at the top of your game." — Bill Maher. [Gatecrasher]

"My split with Brad was the hardest thing I ever went through. But it made me strong, superhuman. Now I'm turning 40 and I'm very excited. When they say youth is wasted on the young, it's so true.'" — Jennifer Aniston. [Daily Mail]

People have called me a sex symbol in the past, but it's very much an effort […] It's been important for me to just do something that's extreme — that really separates me from that public Joaquin Phoenix persona, whatever the fuck that is. Or maybe I'm just lazy." — Joaquin Phoenix on his new, grizzy, bearded "look." [The Sun]